You can keep it private - there's privacy options there from memory. Given that I bought my tickets non-registered (instead of on the net, got them with cash at a newsagent), if I went in and scanned it I'd be like NOBODY can know who I am.
Pretty sure that's an option to take.
Ray - I like your ideas, helping fund the future is a very noble cause. I'd donate money (20 mil?) to medical research; they get fark all money and struggle from year to year never knowing if they'll get a grant that will keep them in a job, when they do ~70 hours work a week trying to find cures for things.